The Bhiwandi crime branch of Thane police on Saturday arrested three people from a gang of seven people, including employees of a telecom firm for preparing fake Aadhaar and election cards to get SIM cards. Four others from the gang had been held in November last year. The accused would download pictures from Facebook profiles and photoshop them on fake Aadhaar and election cards and sell them to undocumented people wanting to get SIM cards.